Material:Sintered diamond impregnated core dirll
Metrix hardness:F1-F10
Metrix height:6mm,8mm or more
Crown profile:W profile,Flat profile,Cross profile,Semi-round profile,Multi-step profile
Waterway type:standard type,wode type,turbo type,wide turbo type,round face discharge hole type,slot face discharge hole,Trapezoid type
Available size:BQ(WLB),WLB-2.400,BQ3(WLB3),BWG,BX,BWM,BWT,LTK60,TBW
NQ(WLN),NQ-3.032,NQ2(WLN2),NQ3(WLN3),NQTT(NWLTT),NMLC,NWG(NX),NWM,NWT,TNW
HQ(WLH),HQ-3.830(WLH-3.830),HMLC,HWF,HWG(HX),HWM,HWT
PQ(WLP),PQ3(WLP3),PWF,SWF,UWF,ZWF
T-36,TT46,TB56,TT56,T2-56,T2-66,T2-76,T2-86,T2-101
T6-76,T6-86,T6-101,T6-116,T6-131,T6-146,T6S-76,T6S-86,T6S-116,T6S-131,T6S-146
B36,B46,B56,B66,B76,B86,B101,B116,B131,B146
| Bit Sizes | Dimension N | Product Availability |
| OD | ID |
| inch | mm | inch | mm | Imp. | Surf Set | TSP | T.C | PCD | E.P. |
| NQ | 2.970-2.960 | 75.44-75.19 | 1.880-1.870 | 47.75-47.50 | Y | Y | Y | Y | Y | Y |
| NQ-RSG | 2.985-2.975 | 75.82-75.57 | 1.880-1.870 | 47.75-47.50 | Y | Y | Y | Y | Y | Y |
| NQ-3.032 | 3.037-3.027 | 77.14-76.89 | 1.880-1.870 | 47.75-47.50 | Y | Y | Y | Y | Y | Y |
| NQ2 | 2.970-2.960 | 75.44-75.19 | 2.000-1.990 | 50.80-50.55 | Y | Y | Y | Y | Y | Y |
| NQ2-RSG | 2.985-2.975 | 75.82-75.57 | 2.000-1.990 | 50.80-50.55 | Y | Y | Y | Y | Y | Y |
| NQ3,NQTT | 2.970-2.960 | 75.44-75.19 | 1.780-1.770 | 45.21-44.96 | Y | Y | Y | Y | Y | Y |
| NQ3-RSG | 2.985-2.975 | 75.82-75.57 | 1.780-1.770 | 45.21-44.96 | Y | Y | Y | Y | Y | Y |
| NQ3-3.032 | 3.037-3.027 | 74.14-76.89 | 1.780-1.770 | 45.21-44.96 | Y | Y | Y | Y | Y | Y |
| NMLC | 2.970-2.960 | 75.44-75.19 | 2.052-2.042 | 52.12-51.87 | Y | Y | Y | Y | Y | Y |
| NWG,NX | 2.970-2.960 | 75.44-75.19 | 2.160-2.150 | 54.86-54.61 | Y | Y | Y | Y | Y | Y |
| NWM | 2.970-2.960 | 75.44-75.19 | 2.160-2.150 | 54.86-54.61 | Y | Y | Y | Y | Y | Y |
| NWT | 2.970-2.960 | 75.44-75.19 | 2.318-2.308 | 58.87-58.62 | Y | Y | Y | Y | Y | Y |
| TNW | 2.970-2.960 | 75.44-75.19 | 2.394-2.384 | 60.80-60.55 | Y | Y | Y | Y | Y | Y |
| Bit Sizes | Dimension H | Product Availability |
| OD | ID |
| inch | mm | inch | mm | Imp. | Surf Set | TSP | T.C | PCD | E.P. |
| HQ | 3.770-3.755 | 97.76-95.38 | 2.505-2.495 | 63.63-63.38 | Y | Y | Y | Y | Y | Y |
| HQ-RSG | 3.790-3.755 | 96.27-95.89 | 2.505-2.495 | 63.63-63.38 | Y | Y | Y | Y | Y | Y |
| HQ-3.830 | 3.840-3.825 | 97.54-97.16 | 2.505-2.495 | 63.63-63.38 | Y | Y | Y | Y | Y | Y |
| HQ-3.895 | 3.897-3.882 | 98.98-98.60 | 2.505-2.495 | 63.63-63.38 | Y | Y | Y | Y | Y | Y |
| HQ3,HQTT | 3.770-3.755 | 95.76-95.38 | 2.411-2.401 | 61.24-60.99 | Y | Y | Y | Y | Y | Y |
| HQ3-RSG | 3.790-3.755 | 96.27-95.89 | 2.411-2.401 | 61.24-60.99 | Y | Y | Y | Y | Y | Y |
| HQ3-3.830 | 3.840-3.825 | 97.54-97.16 | 2.411-2.401 | 61.24-60.99 | Y | Y | Y | Y | Y | Y |
| HQ3-3.895 | 3.897-3.882 | 98.98-98.60 | 2.411-2.401 | 61.24-60.99 | Y | Y | Y | Y | Y | Y |
| HMLC | 3.897-3.882 | 98.98-98.60 | 2.505-2.495 | 63.63-63.38 | Y | Y | Y | Y | Y | Y |
| HWF-Long | 3.912-3.897 | 99.36-98.98 | 3.005-2.995 | 76.33-76.08 | Y | Y | Y | Y | Y | Y |
| HWF-Short | 2.897-3.882 | 98.98-98.60 | 3.005-2.995 | 76.33-76.08 |
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| HWM | 2.897-3.882 | 98.98-98.60 | 3.005-2.995 | 76.33-76.08 | Y | Y | Y | Y | Y | Y |
| HWT | 2.897-3.882 | 98.98-98.60 | 3.192-3.182 | 81.08-80.82 | Y | Y | Y | Y | Y | Y |
J AND R Metalwork Industry Co., Limited established in 2000 and located in Dongguan, Guangdong, China. After almost 13 years management development and technical improvment. Now, J&R Metalwork Industry Co., Limited has become a leading supplier in metalwork industry. Meanwhile, we are one of member of Fasteners industrial Association and Geologic drilling Import &Export Enterprise Association.
J AND R Metalwork Industry Co., Limited is specialized in the manufacturing and supply of various metalwork products. J&R main products include various types of bolts, hex nuts, thread rods, anchor bolts, and supporting washers in DIN, BS, ANSI and JIS.
J AND R also supply diamond drill bit, core barrel, drill rod and casing in Q (wireline) system and conventional system for geologic investigation project contractor.
After 13 years domestic and abroad market investigation, at present our products are sold to many countries and regions including the North America, Europe, Australia, the Middle East and Asia.
J AND R Metalwork Industry Co., Limited owned the advanced production equipments, complete inspection systems for chemical and physical property testing. And We have been constantly strengthening our management and consummate the quality guarantee system. In 2008, we acquired ISO9001: 2008 quality certification. Currently, the 5S management mode is implemented in the company.
Best quality and best service is and will be always our toppest concern.
Our Philosophy
Become Part of the Team
Our people are the key to our success. We look for skilled individuals with an entrepreneurial spirit and the ability to thrive in a collaborative environment. Working together toward common goals makes J&R Metalwork a great place to work. Every day, we challenge our employees to find better ways of working by fostering a team that empowers them to make a difference.
Partnership
J ADN R Metalwork' S global mission statement is to become a leading metalwork supplier in the China. J&R Metalwork do offer OEM and ODM service for buyer' S special requirements. With best efforts, J&R Metalwork try help our clients to grow in our mutual business.
